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Darksoft Neo Multi Help thread

McDashing said:
I did not, but thanks for bring it to my attention.
I was using that method through trial and error. It works often, but about 30% of the time the MVS doesn't reboot and remains stuck on a black screen after the Multi messages (15m waiting but doesnt load). I did not check if the graphical glitches are less intense on slot 2/4, so perhaps thats already the solution to my main problem. I don't mind the "crash" chance.

However I'll dig through this thread to make sure Im not making obvious mistakes that I couldve avoided by just reading. Ill check my harness output as soon as the opportunity arrises
Click to expand...

Update. Messed with alot of factors trying to fix this but it turns out it was the bloody micro-SD.
I've tried several microSD cards, all SDHC, and it seems that Sandisk Extreme SDHC cards causes my multiMVS to shit itself when its trying to load the games. Buying high-end sd's was the issue here.

Sandisk Extreme Pro 32GB SDHC -> Low boot chance, sound issues, Neo Geo Turf Masters is corrupted really damned bad.
Sandisk Extreme 32GB SDHC -> Frequent crashes and sound issues. Multiple games quite corrupt.
Samsung Pro Endurance SDHC ->Low boot chance
Sandisk Ultra 16GB SDHC, oldest cheapest one I could find -> Works like a charm. Only when using third party SD card formatting software, not innate windows card formatting.

With the "faulty" micro-sd cards it became obvious that the multiMVS worked on the first boot and will perform "decently" in games so long I never touch the menu again. Attempting to ever return to menu pretty much makes the card unplayable until I reformatted it again. Had like a 30% to boot, but if I had it running it would keep on trucking aslong as I kept the cabinet on.

The Ultra micro SD has a 100% boot chance, no crashes and plays all games correctly so far. I had some sound looping incorrectly in a screen here or there, but that is fixed by just removing and reinstalling the game onto the multi-mvs. I suspect the faster write speed on the extreme cards may be the factor here?
Anyway, I'm glad it turned out to be something simple. Hope this might help someone with similar problems.
 
Thanks for information. I always use these ones and work like a charm. I think problem comes from these cards being unreliable, not according to standard specifications for SDHC and very often being fake. I'm really glad that this works for you now. Maybe other people with problems can give it a go. @dmg01 , @Evan, @wangfu_fr , @BamaBlaze
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The private messages are lagging on my end but I have been having issues with games loading and restarting from a Sandisk Extreme as well. I am going to try to get a Samsung SD Card before I send anything in. I keep getting this error on most games.
 

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Darksoft said:
Thanks for information. I always use these ones and work like a charm. I think problem comes from these cards being unreliable, not according to standard specifications for SDHC and very often being fake. I'm really glad that this works for you now. Maybe other people with problems can give it a go. @dmg01 , @Evan, @wangfu_fr , @BamaBlaze
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1729550930292.png
Click to expand...

Ok, i just ordered the second red model but it is not really easy to find. That is a pity the device like the Multi MVS was conceived for old SD cards...

I will warn once the parcel arrive.

--> sale canceled finally, no stock available.
 
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dmg01 said:
Just wanted to provide an update on this, did a visual inspection, recap, re-flowed all connector pins for MV1FS, MVH and cartridge, no change in behavior with the MultiMVS cart. I will try to source another board like a MV1C to see if this resolves my issues.
Click to expand...
Final update on this. I tried about 6 different SD cards I had (Sandisk, Samsung, Kingston), ranging from 8GB to 32GB, still same behavior (in game resets, boot looping, behavior worse closer to 5.0v I went, etc).

I decided to open the cart and check the SD card pins, but they were fine. Because the behavior I was having with my MV1FS was so similar to the issues seen with the original batch, I decided to check continuity between the cart edge and R193. Continuity was there. Even though MV1FS compatibility was supposed to be fixed in newer batches, I decided to cut the trace between the edge and R193 to see if it would fix my issues.

I have played for about 3 or 4 hours now, have the M1VFS at 5.0v, and haven't had a single issue with resets or boot looping. Seems like this fixed my issue. Thought I would let you know @Darksoft

Appreciate your help, and I am finally able to enjoy the cart! Thanks
 
Evan said:
Bios didn’t change anything. I am potentially thinking maybe this is a motherboard problem not a cart problem as now I get no sound at all and even in bios testing the sound doesn’t play. There are also some missing components on the bottom of the board that could be suspect
Click to expand...
I replaced the MVS board and lowered the voltage to around 4.9V. I still get the issue occasionally of the sound cutting out, although its not as frequent as with the other motherboard. Should I continue to lower the voltage?
 
Evan said:
I replaced the MVS board and lowered the voltage to around 4.9V. I still get the issue occasionally of the sound cutting out, although its not as frequent as with the other motherboard. Should I continue to lower the voltage?
Click to expand...

@Evan 4.9V might not be enough. Check this:
https://www.arcade-projects.com/thr...mv1fs-and-power-glitch-issue.5618/post-444499

In his case the issue was a problem of Amps. The fact that it works, with lower voltage, but still within limits, usually means that your PCB can't let enough AMPS go through.

The reason could be a bad component, or a component that is drawing too much current like a faulty cap or a faulty IC, but some models limit the current that the cartridge gets. Either way, lowering the voltage, allows for more current to flow, ergo, the problem is solved.
The R193 trace cut was rather a fix for bigger MVS1 Motherboards. Here problem seems to be what I stated above.

It's clear now that the issue is not the cart, but rather a problem of Power/Amps.
 
Darksoft said:
@Evan 4.9V might not be enough. Check this:
https://www.arcade-projects.com/thr...mv1fs-and-power-glitch-issue.5618/post-444499

In his case the issue was a problem of Amps. The fact that it works, with lower voltage, but still within limits, usually means that your PCB can't let enough AMPS go through.

The reason could be a bad component, or a component that is drawing too much current like a faulty cap or a faulty IC, but some models limit the current that the cartridge gets. Either way, lowering the voltage, allows for more current to flow, ergo, the problem is solved.
The R193 trace cut was rather a fix for bigger MVS1 Motherboards. Here problem seems to be what I stated above.

It's clear now that the issue is not the cart, but rather a problem of Power/Amps.
Click to expand...
This worked mostly, only crossed swords 2 has the sound issue still
 
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That game, crossed swords 2, is a conversion that has some glitches, isn't it?
 
Good Evening,
i have weird issue with the cart.
If i change some settings in menu configuration for example boot timer to none and no music, after power cycle these changes are gone. I have 2 Slot mv2fs
In first slot i have orig. Last Resort sitting. The cart is from the last batch.
Besides this, the cart is running flawlessly.
 
Thanks for the hint. Indeed, the board is old, as is the battery :)
i will report as soon as i have replaced the battery
 
I was thinking of replacing the battery with a CR2023 button cell and removing the resistor (470). Is that not a good idea?
 
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